of chicago



W. BARTHOLOMEW. HEAT PREVENTION MEANS FOR EXTRACTORS.

APPLICATION FILED NOV. 3. |917.

Patented July 20, 1920.

@UNITED STATES PATENT-OFFICE;

. /WILLIAM BARTHoLoMEwbF CHICAGO, ILLINOIS, Assieivon To TROY LAUNDRY vMACHINERY CO., LTD., 0F CHICAGO; ILLINOIS,VA CRPORATION 0F NEW YORK.`

Specvlcaton of Letters Patent f v HEAT-PREVENTION MEANS FOR EXTRACTORS.

Patented July 20, 1920.

Application filed November 3, 1917. Serial No. 200,028.

.T0- all whom it may concern:

Be it known that I, WILLIAM BAR'rHoLo- MEW, a .citizen of the United States, and

resident of C hicago, in the county of Cook and State of Illinois, have invented certain new and useful Im rovements in Heat-Prevention Means for Xtractors, of which the following is a specification.

This invention relates to heat prevention means'. for centrifugal extractors.v

.One 'of the objects of the invention is toV maintain a relatively low bearing temperature. .I

vAnother object is to permit a relative.

movement between the-bearing members and at the saine time keep the bearing temperature at aminimum.

f a laterally extending flange, a bearing mem-` l in section, offa centrifugal extractor em ber associated with said flangeV to take up gyratory motion, and heat, resisting means associated with said bearing member and anV adjacent element to permit relative movementtherebetween with a minimum amount of friction. 1 f u The invention is illustrated on the accompanying sheet of drawings, in which- Figure 1 is a side elevation, parts being bodying my invention; 'Y Y Fig. 2 is' an enlarged detail sectional view of the spindlebearing mechanism; Fig. 3 is aV sectional 'view taken in the plane of line -rof Fig. 2, and, u Fig. 4 is a sectional view similar to that shown in Fig. 2, showing a modiication of my invention. y f

The various novel features of my invention will be apparent from the following description and drawings and will be particularly pointed out in the'appended claims.

My invention is illustrated in connection with a centrifugalv hydroextractorl() having a perforated basket 11 secured to the upper end of a spindle 12, the lower end of which is mounted within a recessed portion 13 formed in the base 14 of the curb. The lower end of the spindle 12 rotates in the bearing bushing 15 and is providedwith any suitable stepped bearing 16 having a curved surface rotating upon a stationary step 17 located in the bottom closed end of the bushing 15. The top of the bushing is provided with any suitable oiling device 1S, and intermediate the ends of the bushing it has yan integrally formed laterally extendingV flange 19, the upper and lower sides of which converge outwardly and vengage cooperating bearin n* surfaces of bearing mem-` bers 20. Each of the bearing members 20, which is in the form ofa ring oi` annular piece of material, such as rubber or similar material, has a mating bearing member 21 which is spaced from its cooperating bearing member 2O by laterally extending flanges 22 of-coperating metal rings 23. These metal rings, four in number, two being located between each pair of bearing members above and below the bushing flange 19, havel an inside diameter Sulliciently greater than the outside diameter of the bearing bushing 15 to permit gyratory motion of a considerable degree. At the same time the metal rings 23 prevent the bearingmembers 20 and 21 coming in contact with the bearing bushing 15, thereby providing means whereby currents of air may be circulated between the bearing bushing 15 and the'bearing members 2O and 21V and the ring supporting Vmembers 23 to assist in maintaining'a relatively low bearing temperature.

In a copending`application, Serial No. 176,772, tiled June 25, 1917, I disclosed a single metal ring-between the 'rubber bearingV members 20 and 21. Thile that construction is very good, -I have found that I can reduce'the heatingetlect to a minimum by providing a plurality of my. present rings 23 havingtlieir flanges arranged to engage each other' so that any relative sliding movement of the rubber 'bearing members 20 and 21 takes place by a sliding movement between the metal flanges 22 of the rings 23', thereby reducing the friction andY the accompanying heating effect to a minimum. In other words, by means of my present arrangement, in which I provide two metal rings between two rubber bearing members,

adjacent bearing members 20, as shown in Fig. 4. The pressure exerted upon the bearing members may be regulated by adjusting a lock nut 24 with respect to the base' of the curb. i j

I find also that I am able to use somewhat thinner rubber bearing members 2() and 2l, thereby permitting better vulcanization of the said members and rendering' a better quality of rubber available for this use. l

It is my intention to cover modifications of my invention which come within the spirit and scope` of the following claims.

I claim:

l. In a centrifugal extractor,- tlie combination of a spindle bearing bushing having a laterally extending flange, a resilient bearing member engaging said flange to take up gyratory motion, and metal meansv associated with said bearing member and an ad- `jacent element to permit relative movementV therebetween to reduce the amount of frictien." A v 2.- In a centrifugal extractor, the combination of a resilient spindle bearing bushing having a laterally extending flange, a beari' ing member engaging said flange to take up gyratory motion, and metal means associ# ated with said bearing member and an ad]a- -cent element to permit relative movement therebetween to reduce the amount of friction.-

3. In a centrifugal.extractor, the combination of a spindle bearing bushing having a laterally extending flange, and a set of bearing members on each side of saidflange to take upgyratory motion, each of said sets including a plurality of members, and a plurality of relatively movable members having low frictional resistance spacing said 1 members from each other.

4. In a centrifugal extractor, the combination of.: a spindle bearing bushing having a. laterally extending flange, and a set of bearing members on each side of said flange to take up gyratory motion, each of said sets including a plurality of members, and a' plurality of members having low frictional resistance spacing said members from each other and from said bearing bushing. Y

5. In a centrifugal extractor, the combination'of a spindle bearing bushing having a laterally extending' flange, a bearing member operatii'ely associated therewith to take up gyratory motion, and means between said flange and said bearing member whereby there may be a relative movement between said parts te reduce the amount of friction.

6. In a centrifugal extractor, the combination of a spindle bearing bushing having a laterally extending flange, Hand bearing means on each side of said flange, one of said bearing means including a plurality of members and a plurality of relatively movable retaining members interposed therebetween for reducing frictional resistance.

7. In a centrifugal extractor, the combination of a spindle bearing bushing having a laterally extending flange, and bearing means en each side of said flange, oney of said bearing means includinga plurality of members and a plurality of retaining members interposed therebetween for reducing frictional resistance and for preventing engagement between said first mentioned inem'- bers and bearing bushing. Y

S. In a centrifugal extractor, the combi'- nation of' a spindle bearing bushing having a laterally extending flange, and bearing means on each side of said flange Jfor taking up gyratory motion,v said means including annular members,l and a plurality of rings having engaging Vflanges for separating said annular members to reduce friction between the parts. t v

' 9.f In acentrif'ugal extracten the combination of a spindle bearing bushing having a laterally extending flange,- and bearing means on each side' of saidflange for taking up gyratory motion, said Vmeans including annular members, and a plurality of rings having engaging lflanges for separating said annular members te reduce friction between the parts and being spaced from the bearing bushing to permit circulation of air therebetween.- i

10. In a eentrifugal extractor, the combination of ai spindle bearing bushing having a laterally extending flange', bearing means on each .side of said flange for taking up gyratery motien, one 'of said bearing means including aplurality of members and other means therebetween, and means between said flange and each of the adjacent b ezlring members for reducing frictional resista'nces.

Signed at Chicago, Illinois, this 25th day of October, 1917.

WILLIAM BVRTI-IOLOMEW.

lWitnesses': y

J; W. Gnlrrnn, l J. E; Hemnimn. 

